SmallVector.hpp

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//
//  CeresEngine - A game development framework
//
//  Created by Rogiel Sulzbach.
//  Copyright (c) 2018-2022 Rogiel Sulzbach. All rights reserved.
//
 
#pragma once
 
#include "CeresEngine/Foundation/Allocator.hpp"
#include "CeresEngine/Foundation/Hash.hpp"
 
#include <sfl/small_vector.hpp>
 
namespace CeresEngine {
 
    template<typename T, std::size_t N, typename RawAllocator = DefaultAllocator>
    using SmallVector = sfl::small_vector<T, N, ScopedAllocatorAdaptor<StdAllocator<T, RawAllocator>>>;
 
} // namespace CeresEngine
 
template<typename T, size_t StaticCapacity, class Alloc> struct std::hash<CeresEngine::SmallVector<T, StaticCapacity, Alloc>> {
    using Type = CeresEngine::SmallVector<T, StaticCapacity, Alloc>;
    constexpr size_t operator()(const Type& obj) const {
        size_t seed = CeresEngine::hash(obj.size());
        for(const T& value : obj) {
            CeresEngine::combine(seed, value);
        }
        return seed;
    }
};